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Mass Spectrometry Quiz

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Questions and Answers

What does a mass spectrum plot?

Intensity as a function of the charge

Mass as a function of the charge

Intensity as a function of the mass-to-charge ratio (correct)

Mass as a function of the intensity

How are ions separated in mass spectrometry?

According to their charge

According to their mass-to-charge ratio (correct)

Randomly

According to their mass

What is the purpose of ionizing the sample in mass spectrometry?

To create positively charged fragments or ions (correct)

To create negatively charged fragments or ions

To keep the sample intact

To reduce the mass of the sample

In a mass spectrometry procedure, what causes some of the sample's molecules to become positively charged?

Bombardment with a beam of electrons Signup and view all the answers

What can a mass spectrum be used to determine?

Elemental or isotopic signature of a sample Signup and view all the answers

What does a mass spectrum plot?

Intensity as a function of the mass-to-charge ratio Signup and view all the answers

How are ions separated in a typical mass spectrometry procedure?

According to their mass-to-charge ratio Signup and view all the answers

What is ionized in a typical mass spectrometry procedure?

The sample Signup and view all the answers

What does mass spectrometry determine from a sample?

Elemental or isotopic signature, masses of particles and molecules, and chemical identity or structure Signup and view all the answers

How are mass spectrometry results presented?

As a mass spectrum, a plot of intensity as a function of the mass-to-charge ratio Signup and view all the answers

Study Notes

Mass Spectrometry

A mass spectrum plot displays the distribution of ions by their mass-to-charge ratio, providing information on the molecular weight and structure of the sample.

Ion Separation and Ionization

In mass spectrometry, ions are separated based on their mass-to-charge ratio, typically using a magnetic field or electric field.
The purpose of ionizing the sample is to create charged particles (ions) that can be separated and detected by the mass spectrometer.
Ionization is typically achieved by bombarding the sample with high-energy electrons or photons, causing some of the sample's molecules to become positively charged.

Mass Spectrum Analysis

A mass spectrum can be used to determine the molecular weight, structure, and identity of the sample.
Mass spectrometry determines the molecular weight and structure of a sample by separating and detecting ions based on their mass-to-charge ratio.

Presentation of Results

Mass spectrometry results are typically presented as a mass spectrum, which is a plot of the distribution of ions by their mass-to-charge ratio.

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Description

Test your knowledge of mass spectrometry with this quiz! Explore the mass-to-charge ratio of ions and learn about mass spectra. This quiz covers the application of mass spectrometry in various fields and its use with pure samples and complex mixtures.